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System Parameters Of The Transiting Extrasolar Planet Hd 209458b, Robert A. Wittenmyer, William F. Welsh, Jerome A. Orosz, A. B. Schultz, Wayne Kinzel, M. Kochte, Frederick Bruhweiler, David Bennum, Gregory W. Henry, Geoffrey W. Marcy, Debra A. Fischer, R. Paul Butler, Steve Vogt

Information Systems and Engineering Management Research Publications

We derive improved system parameters for the HD 209458 system using a model that simultaneously fits both photometric transit and radial velocity observations. The photometry consists of previous Hubble Space Telescope STIS and FGS observations, 12 I-band transits observed between 2001 and 2003 with the Mount Laguna Observatory 1 m telescope, and six Strömgren b + y transits observed between 2001 and 2004 with two of the Automatic Photometric Telescopes at Fairborn Observatory. The radial velocities were derived from Keck HIRES observations. The model properly treats the orbital dynamics of the system and thus yields robust and physically self-consistent solutions. …